20455210

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{541}}^1$

素因数の和:766

約数の個数: 32

約数和(自身を含む): 39024000

約数和(自身を除く): 18568790

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 199, 398, 541, 995, 1082, 1990, 2705, 3781, 5410, 7562, 10279, 18905, 20558, 37810, 51395, 102790, 107659, 215318, 538295, 1076590, 2045521, 4091042, 10227605, 20455210]

約数ペア:

[(1, 20455210), (2, 10227605), (5, 4091042), (10, 2045521), (19, 1076590), (38, 538295), (95, 215318), (190, 107659), (199, 102790), (398, 51395), (541, 37810), (995, 20558), (1082, 18905), (1990, 10279), (2705, 7562), (3781, 5410)]